JPH10230007A - Eye washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an eye washing device capable of preventing the intrusion of bacteria into a liquid chemical container at the time of use, being sanitarily used and atomizing the fixed amount of liquid chemical for each operation. SOLUTION: This eye washing device is provided with the liquid chemical container 1 where the liquid chemical for washing eyes is filled along with liquefied gas or compressed gas, a fixed amount valve 2 attached to the upper part of the liquid chemical container 1 and provided with a fixed amount chamber 5 inside to which a stem 3 provided with a passage is vertically movably inserted and an atomization nozzle part 11 formed on the tip of the stem 3. The fixed amount valve 2 is provided with an upper valve 6 and a lower valve 7 for which the lower part of the stem 3 is a valve body, allows the fixed amount chamber 5 to communicate with the inside of the liquid chemical container 1 when the stem 3 is not operated and allows the passage inside the stem 3 to communicate with the fixed amount chamber 5 when the stem 3 is pressed down.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an eyewash device for washing eyes, and more particularly to an eyewash device that can easily and hygienically wash eyes by spraying a predetermined amount of a drug solution on the eyes.

[0002]

2. Description of the Related Art Conventionally, as an eyewash device for individuals to easily wash their own eyes, there is known an eyewash device in which a cup is filled with a solution for eyewashing, the cup is pressed to the eye, turned upward, and the eyewash is immersed in the solution. Have been.

[0003]

However, since this type of eyewashing device transfers a drug solution from a drug solution bottle to a cup each time it is used and puts the cup on the eye for use, the method of use is complicated and difficult. Since the used cup is used repeatedly instead of being thrown away, there is a problem that the drug solution is easily contaminated with bacteria during use and is unsanitary.

Therefore, Japanese Utility Model Laid-Open Publication No. 6-75487 proposes an eyewash device in which a manual pump is attached to an eyewash solution container, and the eyewash is sprayed to the eyes from a nozzle provided at the tip of the manual pump to perform eyewash. I have. However, the eyewasher using this manual pump has a problem that the amount of the chemical solution to be sprayed greatly differs depending on how the pump is operated, and it is difficult to always spray a constant amount required for eyewashing. .
Further, since the manual pump operates while sucking outside air into the eyewash container, there is a possibility that bacteria may enter the eyewash container due to the inflow of outside air.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and can prevent bacteria from invading into a chemical solution container at the time of use, can be used hygienically, and sprays a certain amount of a chemical solution to the eye for each operation. It is an object of the present invention to provide an eyewasher that can perform eyewashing.

[0006]

In order to achieve the above object, an eyewasher according to the present invention is provided with a medicine container filled with a liquid medicine for eyewashing together with a liquefied gas or a compressed gas, and an upper part of the medicine container, A stem having a passage is vertically movably inserted therethrough, and includes a metering valve having a metering chamber therein, and a spray nozzle provided at a tip of the stem.
It has an upper valve and a lower valve with the lower part of the stem as the valve body, and when the stem is not operated, the fixed amount chamber communicates with the inside of the chemical solution container, and when the stem is pushed down, the passage in the stem communicates with the fixed amount chamber. You.

Here, a cover body for covering the eyes can be provided on the upper part of the stem, and a liquid reservoir part for storing the sprayed chemical can be provided on the lower part of the cover body.

[0008]

[Operation / Effect] In the eyewash device having such a structure, when the eyes are washed, the spray nozzle portion is brought close to the eyes and the stem is pushed down. By this operation, the lower valve of the metering valve closes and the upper valve opens, and a certain amount of the chemical solution that has entered the metering chamber in a pressurized state is sent from the passage of the stem to the spray nozzle, and from there toward the eyes. The medicine is sprayed, and the medicine is touched to wash eyes.

[0009] One operation of pushing down the stem sprays a certain amount of the chemical solution in the metering chamber, and when a certain amount of spraying is completed, the stem is released and returned to the original upper position again. As a result, the upper valve closes again and the lower valve opens, so that a certain amount of the chemical solution in the container enters the quantitative chamber. Therefore, if the spray is performed by pressing down the stem a predetermined number of times as necessary, the eye can be washed by spraying a predetermined amount of the chemical solution. In other words, since the amount of the medicine sprayed at a time by pushing down the stem is constant, if the number of sprays is specified, the amount of the medicine used for one eye wash can be accurately limited, and Can be prevented from being administered.

Further, since the inside of the chemical solution container is always pressurized by a liquefied gas or a compressed gas, even when the stem is operated, not only the outside air but also bacteria do not enter the container, and the metering valve does not enter. Due to the opening and closing operations of the upper valve and the lower valve, backflow of the chemical solution does not occur, and the inside of the chemical solution container can be always kept in an aseptic state, so that it can be used hygienically.

Further, if a cover body for covering the eyes is provided on the upper portion of the stem, the chemical solution can be sprayed without scattering, and a liquid reservoir for storing the sprayed chemical solution is provided on the lower portion of the cover body. If this is the case, it is possible to satisfactorily store the chemical solution after spraying and washing the eyes, and it will not wet clothes and the like.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view of the eyewash device, FIG. 2 is a longitudinal sectional view thereof, and FIG. 3 is a partial front view thereof.
Reference numeral 1 denotes a chemical solution container for containing a chemical solution to be used as an eye wash, and is made of metal or P
Formed as a pressure vessel with plastic such as ET,
The container 1 is filled with a liquid medicine for eyewashing, a liquefied gas or a compressed gas as a propellant. Although air can be used as the compressed gas, an inert gas such as nitrogen is used for a chemical solution that is easily oxidized.

The chemical liquid container 1 is formed of a metal, glass, plastic or the like to have a structure having a predetermined pressure resistance and impact resistance. Prevents oxidation, alteration, etc. A lid 1a is attached to the upper portion of the chemical solution container 1 so as to hermetically close the container, and a fixed quantity valve 2 having a stem 3 serving as a nozzle tube protruding is attached to the center of the lid 1a.

The metering valve 2 is provided with a metering chamber 5 as a valve chamber in a valve housing 10 provided with a flange portion 10a.
The stem 3 is inserted into the quantitative chamber 5 so as to penetrate the upper and lower surfaces of the quantitative chamber 5, and the upper valve 6 and the lower valve 7 are alternately opened and closed by the vertical movement of the stem 3.

The valve housing 10 of the metering valve 2 is fitted and fixed to a recess formed inside the lid 1a via two gaskets 14 and 15, and an introduction tube 16 is provided at the bottom of the valve housing 10. Connected.

The stem 3 is formed in a pipe shape provided with a passage 3a in the axial direction, and has a small-diameter portion and a medium-diameter portion at a position where the stem 3 is inserted into the fixed amount chamber 5. A gasket 17 is provided at a lower portion in the fixed amount chamber 5, and a valve hole 8 is formed therein. The lower valve 7 is configured so that the valve hole 8 is opened and closed by a small diameter portion and a medium diameter portion of the stem 3.

Further, a valve hole 12 of the upper valve 6 is provided on the side of the intermediate portion of the stem 3, and when the valve hole 12 passes through the hole of the gasket 14 from top to bottom or from bottom to top, The upper valve 6 is opened and closed. When the stem 3 is at the upper position, the valve hole 12 goes out and communicates with the outside air, and when the stem 3 is pushed down, the valve hole 12 opens into the metering chamber 5.

A coil spring 9 for urging the stem 3 upward is provided in the fixed amount chamber 5 so as to be fitted on the stem. On the other hand, the upper part of the stem 3 is bent horizontally,
A spray nozzle 11 having a constricted hole is provided at the tip. The nozzle hole of the spray nozzle portion 11 is formed so as to spray the chemical solution with a weak spray force on the entire eye.

Further, a cup-shaped cover body 4 for covering the eyes is attached to the spray nozzle section 11, and a liquid storage section 13 for storing the sprayed cleaning liquid is provided below the cover body 4. The cover 4 and the liquid reservoir 13 can be integrally formed of, for example, transparent plastic.

In the eyewash device thus constructed, when not operated, as shown in FIG. 2, the coil spring 9 pushes the stem 3 upward, so that the valve hole 12 of the upper valve 6 of the metering valve 2 is closed. Outside the metering chamber 5, the upper valve 6 is closed. The lower valve 7 of the metering valve 2 is opened by opening a valve hole 8, and a certain amount of the drug solution in the container 1 is filled into the metering chamber 5 through the introduction tube 16.

When washing the eyes, the user holds the container in his hand and places the cover body 4 around the eyes so as to cover the eyes.
The stem 3 is pushed down as shown in FIG. By pushing down the stem 3, the valve hole 12 of the upper valve 6 enters the fixed quantity chamber 5,
The upper valve 6 opens.

In this way, the pressurized chemical in the metering chamber 5 is sent to the spray nozzle 11 through the passage 3 a in the stem 3, and from there to the eye in the cover 14. Is sprayed. At this time, since the lower valve 7 of the metering valve 2 is in the closed state, the spraying is terminated after a certain amount of the chemical solution is sprayed in the metering chamber 5.

As a result, a fixed amount (amount corresponding to the volume in the fixed amount chamber 5) of the chemical solution is sprayed accurately by one operation of pushing down the stem. When the stem 3 is released after being depressed, the stem 3 is pushed upward by the urging force of the coil spring 9 and returns to the position shown in FIG. 2, whereby the upper valve 6 is closed and the lower valve 7 is opened, The liquid medicine in the container 1 is again filled into the fixed quantity chamber 5 through the valve hole 8 by a predetermined amount.

Thereafter, in the same manner as above, spraying is performed by pressing down the stem 3 a predetermined number of times. For example, when the amount of the chemical used for one eye wash is 5 mL, the amount of the chemical entering the fixed amount chamber 5 is reduced. If the amount is 1 mL, the user can be instructed to perform the spraying five times, and the eyes can be washed well with the predetermined amount of the chemical solution.

Since the above-described spraying of the chemical is performed by pressing the cover body 4 around the eyes, the chemical does not scatter around, and the chemical after touching and washing the eyes is The liquid is stored in the lower liquid storage section 13 along the cheeks and the like, so that it is possible to prevent the clothes and the like from getting wet during eye washing.

[0027]

EXAMPLES Next, examples performed to confirm the effects of the present invention will be described. In the examples, as shown below, an eyewash was prepared according to Formulation Example 1, Formulation Example 2, and Formulation Example 3, and 20 ml of the eyewash solution of each of the formulation examples was aseptically filled together with compressed air into the drug solution container 1. The eyewash condition, the quantitativeness of the spray amount, and the sterility of the drug solution were investigated depending on the difference in the spray amount.

Formulation Example 1 Sodium azulene sulfonate 0.002 g Taurine 0.1 g Boric acid 1.0 g Borax 0.05 g Methyl paraxybenzoate 0.026 g Propyl parahydroxybenzoate 0.014 g L-Menthol Trace amount of sodium chloride 0.5 g Sterilized purified water Amount to be 100 ml [Formulation example 2] Dipotassium glycyrrhizinate 0.025 g Boric acid 1.0 g Borax 0.05 g Benzalkonium chloride 0.01 g L-Menthol trace amount of sodium chloride 0.5 g dl- Chlorpheniramine maleate 0.003 g Benzalkonium chloride 0.01 g L-menthol Trace amount of sodium chloride 0.9 g Sterilized purified water Amount of 100 ml in total The above Formulation Example 1, Formulation Example 2, and Formulation Example 3 each have a pH of 7,
It is a good eyewash having an osmotic pressure ratio of 1.0.

(1) Eyewashing condition due to difference in spray amount The eyewash prepared in Formulation Example 1, Formulation Example 2, and Formulation Example 3 is filled in a drug solution container, and each spray amount is 0.5 ml and 1 m, respectively.
1, 2 ml, and 3 ml were set, and two male and three female subjects were actually sprayed and used, and the condition after eye washing was examined. Since the number of sprays for each eye wash was three, the total spray amount for each eye wash was 1.5 ml for 0.5 ml, 3 ml for 1 ml, 6 ml for 2 ml, and 9 for 3 ml.
ml.

The situation after the three sprays is as shown in Table 1 below. From Table 1, it can be seen that the amount is small when the amount of one spray is 0.5 ml, and that the amount is 1 ml or more is appropriate.

[0031]

[Table 1]

The amount of one spray is adjusted to 0.1 by adjusting the metering valve.
It can be set from 1 ml, but it is preferable to set it to 1 ml or more. If the amount of one spray is 3 ml or more, if the number of sprays is set to two or one, the eye wash can be washed well without wasting the eye wash. can do. Further, the cover body covering the eyes could effectively suppress the scattering of the eyewash when sprayed. In addition, most of the sprayed chemical solution was accumulated in the liquid reservoir, and the eyes could be comfortably washed without wetting clothes and the like. In addition, the above-mentioned prescription example is an example, and an eyewash can also be prepared by a prescription other than the above.

(2) Quantitative spraying property In order to confirm the quantitativeness of the spraying, 20 ml of eyewash was filled in a chemical solution container together with compressed air, the spraying amount was set to 0.5 ml, and a predetermined number of sprayings (40 times) Was performed to measure the amount of spray for each number of sprays. The measurement of the spray amount for each spray frequency
The measurement was carried out by measuring the weight of the entire chemical liquid container every three times of spraying and converting the amount to the spray amount.

The results are shown in the graph of FIG. 5, which shows that the spray amount at each time is 1.5 g (ml).
It can be seen that the value falls within a range of approximately + -10% with respect to. Therefore, if the number of times of spraying when using the eyewash device is specified, it is possible to prevent the eyewash solution from being used in an excessive amount.

(3) Confirmation of sterility in the drug solution container With respect to the drug solution containers of Formulation Example 1, Formulation Example 2, and Formulation Example 3 used above, the residual liquid after use is taken out and subjected to the Japanese Pharmacopoeia Law of the thirteenth revision. The test was performed according to the described sterility test method, and the sterility in each drug solution container was examined.

The test results are shown in Table 2 below. From this Table 2, it was confirmed that the insides of the drug solution containers of Formulation Example 1, Formulation Example 2 and Formulation Example 3 were maintained in an aseptic condition. Was.

[0037]

[Table 2]

As described above, since the inside of the drug solution container is maintained in a sterile condition even after use, it is understood that the eyewasher can be used hygienically.

[Brief description of the drawings]

FIG. 1 is a side view of an eyewasher showing one embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the eyewash device.

FIG. 3 is a partial front view of the eyewash device.

FIG. 4 is a partial cross-sectional view during a spraying operation.

FIG. 5 is a graph showing the relationship between the number of sprays and the amount of spray in the example.

[Explanation of symbols]

 1-Drug container 2-Quantitative valve 3-Stem 4-Cover body 5-Quantitative chamber 6-Top valve 7-Bottom valve

Claims (3)

[Claims] 1. A liquid medicine container filled with a liquid medicine for eyewashing together with a liquefied gas or a compressed gas, and a stem attached to an upper part of the liquid medicine container and having a passage, which is vertically movably inserted, and has a fixed amount chamber therein. A metering valve, and a spray nozzle provided at a tip of the stem, the metering valve includes an upper valve and a lower valve having a lower portion of the stem as a valve body, and the valve is provided when the stem is not operated. An eyewash device characterized in that the metering chamber communicates with the inside of the drug solution container, and when the stem is pushed down, the passage in the stem communicates with the metering chamber. 2. The eyewash device according to claim 1, wherein a cover body for covering an eye is provided on an upper portion of the stem. 3. The eyewash device according to claim 2, wherein a liquid reservoir for storing a medicinal solution after spraying is provided at a lower portion of the cover body.